Nut-lock



, (No Mode.)

J H' BURDIGK,

Patented Aug.. 4, 1885.

NO 323,560l

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UNITED STATES PATNT Orifice@ JUSTIN II. BURDIOK, OF UTIOA, ASSIGNOR TO THE BURDICK NUT LOCK COMPANY, OF MILVAUKEE, WISCONSIN.

NUT-LOCK.

SPECIFICATION forming part of Letters Patent No. 323,560, dated August 4, 1885.

Application filed December 9, 1884. (No model.)

To @ZZ whom t may concern: verse direction, in the nut B', and the bolt A Be it known that I, JUSTIN H; BURDIOK, will in this manner he so tightly grasped that 45 of Utica, in the county of Dane, and in the if care has been taken to turn the nut B so State of Visconsin, have invented certain new that at the end of its travel the lug b will fall and useful Improvements in Nut-Locks; and I in one ofthe sockets b, no amount of vibration do hereby declare that the following is a full. will dislodge it therefrom,and nothingless than clear, and exact description thereof. asirain e pia' to that of the wrench by means of 5o My invention relates to improvements in which it was so looked will nnloosen the nuts nutloeks for screw-bolts, and will be fully dehold on the bolt. Both the depressions b ro scribed hereinafter. and the lng b may be made of another shape In the drawings, Figure I is a cross-section than that above deseribed-sueh as eval or of look-nuts embodying my invention in poelliptical-withoutdeparting from the spirit 55 sition on a screw-bolt just before looking. of my invention. Fig. 2 is alike view of the same in the locked Having thus described Inyinventiomwhat I I5 position. Fig. 3 is asectional View on line Claim as new, and desire to secure by Letters fo :v of Fig. 4. Fig. 4 is a top plan view of Patent, isthe nlain nut, and Fig. 5 is an under side plan l. The combination,with a main screw-bolt 6o View of the janrnut. nut having a series of semi-spheroidal sockets A is the screw-bolt, and B is the main nut. in its outer face, of a locking-nut provided In the outer face of this nut I provide a series on its inner face with a semi-spheroidal lug of senIi-spheroidal depressions or sockets, b b adapted to lodge in either one of the sockets I) b, the edges of and spaces between which of the Inain nut at the end of its e0nrse,where 65 are rounded out, as shown at bl in Fig. 3.- by the bolt is tightly grasped and the nuts B is the jam or lock nut, and this nut is looked in position around the saine, substair provided on its inner face with a senii-sphetially as set forth.

roidal lug, b,projeeting from it at such a point 2. The Combination, with a threaded bolt, as to correspond with the sockets b of the nut of a main nut having a series of sockets ar- B7 in either lone of which the said lug is der ranged at regular intervals in its outer face, signed to lodge when the nuts are looked in the spaces betwen each two Consecutive s0ek 3o position. If desired, a succession of two or ets being rounded downto makeaeontinuous three of thejain-nut lugs b may be used. The curved surface all around the said nut, and a main nut B having reached its seat against locking-nut provided on its inner face with a thebar, as usual, the nut B is screwed against lug of shape corresponding to the sockets in it as far as it can be done. As the projecting the other nut, substantially as set forth. 35 lug b impinges against the outer face of the In testimony that I elaini the foregoing I main nut B, it detlects it diagonally, as shown, have hereunto set my hand, at Utica, in the so that the inner edge of its thread on one eonntyof Dane and State of lViseonsin, in the 8o side-that is, on the side of the lug b-will presence of two witnesses.

be pressed hard against the outer edge of the TI ,Y Y 4o bolt-thread, while on the opposite side the JLSFD H' BURDICK outer edge of the nutthread will inipinge lVitnesses:

against the inner edge of the bolt-thread. The WILLIAM NELSON,

saine delleetion will also be caused, but in re- MARTHA S. NELsoN. 

